In this, the second of two special SEJ TipSheets, the Advocate's Amy Wold provides you with a plethora of science-based information to cover the ongoing story of the Deepwater Horizon disaster, on the eve of the five-year anniversary. Photo: Officials assess sample processing and chain of custody protocol for handling specimens associated with the oil spill. Credit: NOAA.

"Fault lines dating back hundreds of millions of years in Oklahoma that have been recently reactivated could lead to a devastating quake in the state where many structures were not built to withstand major seismic activity, a report said."

April 20, 2015, marks the fifth anniversary of the BP Deepwater Horizon oil spill in the Gulf of Mexico, one of the largest environmental disasters in U.S. history. The story is far from over. If you are covering the legacy of the spill, SEJ is offering two special TipSheets by the Advocate's Amy Wold that will help you get the facts and background. Photo: Oiled endangered Ridley's turtle. Credit: Carolyn Cole/ LA Times; courtesy NOAA.

"Almost two years after an Exxon Mobil Corp. pipeline split open and sent Canadian crude flowing through a neighborhood in Mayflower, Ark., federal regulators have quietly proposed a sweeping rewrite of oil pipeline safety rules."

"A federal appeals court upheld a district judge's decision to drop manslaughter charges against two former BP Plc (BP.L) well site managers over their roles in the 2010 Gulf of Mexico oil drilling disaster that killed 11 people."

"At a time when Alaska state officials are eager to provide low-cost fuel to the energy-hungry Fairbanks region, the Alaska Railroad Corp. is seeking to become the first U.S. company to ship liquefied natural gas by rail."

"The U.S. rail industry is pushing the White House to drop a requirement that oil trains adopt an advanced braking system, a cornerstone of a national safety plan that will soon govern shipments of crude across the country."